The U.S. toll-free dial-in number for the conference call is
1-844-492-3731, and the international dial-in number is 1-412-542-4121.
A live webcast of the conference call will be available under the
“Company” tab in the “Investors / Events & Presentations” section of the
company's website at http://investor.cyrusone.com/events.cfm.
The press release announcing fourth quarter 2016 results and introducing
full year 2017 guidance will be issued after the market closes on
Wednesday, February 22, and will be available on the company’s website
under the “Company” tab in the “Investors / News” section.

For those unable to participate, a replay will be available beginning
one hour after the conclusion of the call on February 23, 2017, through
March 9, 2017. The U.S. toll-free replay dial-in number is
1-877-344-7529, and the international replay dial-in number is
1-412-317-0088. The replay access code is 10098910.

About CyrusOne

CyrusOne (NASDAQ: CONE) is a high-growth real estate investment trust
(REIT) specializing in highly reliable enterprise-class, carrier-neutral
data center properties. The company provides mission-critical data
center facilities that protect and ensure the continued operation of IT
infrastructure for more than 950 customers, including nine of the
Fortune 20 and 180 of the Fortune 1000 or equivalent-sized companies.

CyrusOne’s data center offerings provide the flexibility, reliability,
and security that enterprise and cloud customers require, and are
delivered through a tailored, customer-service-focused platform designed
to foster long-term relationships. CyrusOne’s National IX platform
provides robust connectivity options to drive revenue, reduce expenses,
and improve service quality for enterprises, content, and
telecommunications companies. CyrusOne is committed to full transparency
in communication, management, and service delivery throughout its 35
data centers worldwide. Additional information about CyrusOne can be
found at www.CyrusOne.com.

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